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Texas Instruments TLC352CD
- Part No.:
- TLC352CD
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC352CD.pdf
- Description:
- IC COMPARATOR 2 DIFF 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,224
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Product details
Overview
TLC352CD from Texas Instruments is a dual CMOS voltage comparator with open-drain outputs, designed for low-power, single- or dual-supply operation across 2.7V–18V. It delivers 150µA typical supply current at 5V, 5mV max input offset voltage at 25°C, and 10¹²Ω typical input impedance-enabling direct interface with high-impedance sensors in battery-powered industrial monitoring systems.
For engineers reviewing the TLC352CD datasheet, TLC352CD pinout, TLC352CD application, or TLC352CD equivalent, key selection considerations include its rail-to-rail common-mode input range (including ground), TTL/MOS/CMOS-compatible open-drain outputs, −40°C to 85°C industrial-grade variants (TLC352ID), and pin compatibility with LM393 for legacy design upgrades.
Technical Context
The TLC352CD implements two independent CMOS differential-input comparators on a single die, each featuring ultra-low input bias current (5pA typ) and ESD protection rated at 2000V. Its input stage operates with common-mode voltage spanning from ground to VDD−1.5V over full temperature range, supporting direct sensing of grounded reference signals without level-shifting.
Output stages are n-channel open-drain configurations capable of sinking up to 16mA per channel at 5V supply, with logic-level translation enabled via external pull-up to voltages up to 16V-decoupling output logic levels from comparator supply rails and enabling wired-AND bus architectures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7V to 18V - supports direct integration into 3.3V, 5V, and 12V systems without regulation |
| Input Offset Voltage (max) | 5mV at 25°C - ensures reliable threshold detection with ≤5mV hysteresis margin |
| Supply Current (typ) | 150µA at 5V - enables multi-year operation in coin-cell–powered sensor nodes |
| Input Bias Current (typ) | 5pA - permits use with >100MΩ source impedances (e.g., piezoelectric sensors) |
| Common-Mode Input Range | 0V to VDD−1.5V - allows direct connection to ground-referenced transducers |
| Response Time | 100ns typ at 100mV overdrive - suitable for medium-speed zero-crossing detection |
| ESD Rating | 2000V HBM - meets basic handling requirements for automated assembly lines |
Pinout & Package
Package: SOIC-8 (D package), 3.9mm × 4.9mm body, 1.75mm max height, gull-wing leads, RoHS-compliant NIPDAU finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Open-drain output of Comparator A - requires external pull-up for logic HIGH |
| 2 | IN− A | Inverting input of Comparator A - accepts signals down to ground |
| 3 | IN+ A | Non-inverting input of Comparator A - high-impedance node (10¹²Ω) |
| 4 | GND | Ground reference for both comparators and internal circuitry |
| 5 | IN+ B | Non-inverting input of Comparator B - electrically isolated from Channel A |
| 6 | IN− B | Inverting input of Comparator B - supports independent threshold setting |
| 7 | OUT B | Open-drain output of Comparator B - enables independent or wired-AND logic |
| 8 | VDD | Positive supply rail - powers both comparators; no separate ground return needed |
Key Features
| Feature | Design Value |
|---|---|
| Single/dual-supply operation | Operates from 2.7V–18V single supply or ±1.35V–±9V dual supply - eliminates need for split-rail generation in portable designs |
| Ultra-low input bias current | 5pA typical - preserves signal integrity when interfacing with high-impedance pH electrodes or photodiode amplifiers |
| Open-drain output architecture | Sinks up to 16mA per channel - enables flexible logic-level translation and wired-AND bus configurations |
| Rail-to-rail common-mode input | Includes ground in input range - allows direct sensing of 0V-referenced signals without external bias networks |
| LM393 pin compatibility | SOIC-8 footprint and pin assignment match LM393 - simplifies drop-in replacement in existing PCB layouts |
Applications
| Overvoltage Protection Circuit | Battery Voltage Monitor |
|---|---|
Use Scenario: Detects when system input exceeds safe 12V threshold in automotive accessory modules. IC Role / Device Role / Timing Role: Dual comparator configures one channel as overvoltage detector and second as undervoltage lockout, using shared reference. Use Value: 5mV offset tolerance ensures trip point accuracy within ±0.04% of 12V, preventing false shutdowns during load transients. | Use Scenario: Monitors Li-ion cell voltage during charging/discharging in handheld medical devices. IC Role / Device Role / Timing Role: Compares cell voltage against precision 3.0V and 4.2V references to control charge enable/disable states. Use Value: 150µA supply current extends battery life by >200 hours versus bipolar comparators in continuous-monitor mode. |
| Industrial Sensor Interface | Power Supply Sequencing |
Use Scenario: Interfaces with 100kΩ thermistor network in HVAC temperature controllers. IC Role / Device Role / Timing Role: Converts analog resistance changes into digital logic signals for microcontroller GPIO inputs. Use Value: 5pA input bias current avoids measurement error >0.5°C caused by leakage through 100kΩ thermistor at 25°C. | Use Scenario: Ensures correct power-up order of FPGA core (1.2V) and I/O (3.3V) rails in telecom baseband boards. IC Role / Device Role / Timing Role: Each comparator monitors respective rail with hysteresis to generate reset signals with noise immunity. Use Value: Open-drain outputs allow OR-ing of multiple reset signals onto single system RESET line without level-shifter ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393DR | Bipolar input stage; 250µA supply current; 2mV offset; no ESD rating specified | Limited to >5V operation; higher power draw reduces battery life in portable designs | Select LM393DR only when cost is primary constraint and 5V+ supply is guaranteed |
| TLC372CDR | Same CMOS process; 75µA supply current; 10mV offset; identical SOIC-8 package | Higher offset reduces precision in sub-10mV threshold applications but improves speed | Choose TLC372CDR when lower power (75µA vs 150µA) outweighs need for 5mV offset spec |
Compared with LM393DR and TLC372CDR, the TLC352CD offers optimal balance of precision (5mV offset), ultra-low bias current (5pA), and robust ESD protection (2000V) in a pin-compatible SOIC-8 package-making it preferred for high-impedance, battery-sensitive, and industrial-grade designs where reliability and accuracy are co-prioritized.
Availability
TLC352CD is available at Aetrix Electronics and suitable for industrial sensor interfaces, battery management systems, and overvoltage protection circuits requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLC352CD includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and digital signal processing technologies, with over 90 years of innovation in industrial, automotive, and consumer electronics.
The TLC352CD belongs to TI's precision analog comparator family, engineered for low-power, high-impedance signal conditioning in battery-operated and industrial sensing applications where input leakage and supply efficiency are critical.
FAQ
What is the operating temperature range for the TLC352CD?
The TLC352CD is characterized for operation from 0°C to 70°C. This commercial-grade temperature specification makes it suitable for indoor industrial controls, consumer electronics, and office equipment where ambient conditions remain within this range. For extended industrial environments (−40°C to 85°C), the TLC352ID variant is recommended. The TLC352CD datasheet specifies electrical parameters under these exact conditions, and thermal derating is not required within this range.
Does the TLC352CD support single-supply operation?
Yes, the TLC352CD fully supports single-supply operation from 2.7V to 18V. Its common-mode input voltage range includes ground (0V) and extends up to VDD−1.5V across the full temperature range, allowing direct interface with grounded reference sources without external level-shifting circuitry. This capability is explicitly verified in the TLC352CD datasheet Section 4.2 Recommended Operating Conditions and Figure 5-2.
What is the maximum sink current capability of the TLC352CD outputs?
The TLC352CD outputs can sink up to 16mA per channel when VDD = 5V and VOL = 1.5V, as specified in Section 4.4 Electrical Characteristics of the official datasheet. At 12V supply, the sink current remains ≥6mA under the same test conditions. These values reflect actual measured performance-not theoretical limits-and define the minimum pull-up resistor value (e.g., 312Ω for 16mA at 5V) required to maintain valid logic LOW levels.
Is the TLC352CD pin-compatible with the LM393?
Yes, the TLC352CD is pin-compatible with the LM393 in SOIC-8 (D) and PDIP-8 (P) packages, sharing identical pin assignments for VDD, GND, IN+, IN−, and OUT terminals. This compatibility is confirmed in the TLC352CD datasheet Feature list and Pin Configuration section. However, designers must verify that the open-drain output behavior and CMOS input characteristics meet system requirements, as LM393 uses bipolar inputs and has different drive strength.
What packaging options are available for the TLC352CD?
The TLC352CD is offered in SOIC-8 (D) package only, with tape-and-reel option TLC352CDR (2500 units/reel). The D package measures 3.9mm × 4.9mm with 1.75mm max height, gull-wing leads, and NIPDAU lead finish. No PDIP or TSSOP variants exist for the 'C' temperature grade-those are exclusive to TLC352CP (PDIP) and TLC352IP (industrial temp). The TLC352CD part marking is "352C" per TI's Packaging Information document.
TLC352CD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- LinCMOS™
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Differential
- Number of Elements:
- 2
- Output Type:
- CMOS, MOS, Open-Drain, TTL
- Voltage - Supply, Single/Dual (±):
- 1.4V ~ 16V, ±0.7V ~ 8V
- :
- 5mV @ 5V
- Voltage - Input Offset (Max):
- 5pA @ 5V
- Current - Input Bias (Max):
- 20mA
- Current - Output (Typ):
- 400µA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
TLC352CD FAQ
1.How can I place an order for TLC352CD through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC352CD on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TLC352CD reliable?
The price and inventory of TLC352CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC352CD is usually 5 days.
3.What payment methods are accepted for TLC352CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC352CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC352CD?
TLC352CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC352CD order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TLC352CD?
For technical support, including TLC352CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC352CD requirements.
6.How does Aetrix verify that TLC352CD is sourced from the original manufacturer or authorized distributors?
All TLC352CD products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TLC352CD meets industry standards.
7.What is the process for return or replacement of TLC352CD?
All TLC352CD units undergo pre-shipment inspection (PSI). If there is an issue with TLC352CD, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TLC352CD part is unused and in its original packaging.
Return procedure for TLC352CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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